JPS5846996B2 - Device for locking the locking bolt of a cylinder lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for locking a locking bolt of a cylinder lock in a locked position when the locking cylinder is removed in an unauthorized manner. It has a lever that is rotated by engaging and removing the locking cylinder.

It is known in practice to open a cylinder lock by pushing the locking bolt back through the hole created after the locking cylinder has been pulled out.

In order to prevent this from happening, it is known to attach the locking cylinder to the housing in a non-removable manner, such as a push fit.

Furthermore, as shown in German Patent No. 2,252,743, a lever is provided in the housing at the rear end of the locking bolt, so that when the locking bolt locks, the lever converts the cylinder core. The lever is engaged with the roller and tilted to a position that prevents the locking bolt from being pushed back when the locking cylinder is pulled out, thereby preventing the locking bolt from being pushed back.

Since such known levers are moved during actuation of the cylinder core lock, they are relatively complex and intricate to manufacture and are prone to problems.

Moreover, when the lock cylinder is withdrawn, such a lever is actuated in a manner similar to a locking bolt, and when the lock is installed, the lever is inevitably moved into the locking position. It will break.

The object of the invention is to provide an improved device of the type mentioned at the outset, which is simple in construction, non-activable when attempting to pull out the locking cylinder, and simple to install.

According to the present invention, this problem can be solved by being held in the unlocked position by the lever when it is pressed by the spring in the locking direction and the lever is not in the rotated state, and when the lever is rotated, it is pulled. This problem is solved because the locking bolt can be locked by the locking piece that is released.

In the cylinder lock provided in the device according to the invention, neither the locking bolt nor the locking device blocking the locking bolt can be activated when the lock cylinder is withdrawn.

Since the device according to the invention operates completely separately from the locking operation, it is easy to install and prevents inadvertent actuation of the device.

Furthermore, the device according to the invention can be of very simple construction.

This thick, simple, and reliable structure has a surface or nose portion that supports a locking piece that can be engaged with a locking bolt at one end of the lever opposite to the cylinder.

In order to ensure that the lever does not move into the unlocked position even when vibrations occur, it is provided that the lever is held in the non-rotating position by means of a deformable or elastic part.

The deformable or elastic part can be a lever or a bendable protrusion on the housing wall.

Due to its easy deformability, this protrusion can have a predetermined breaking point.

However, this protrusion can also be made of elastic material.

Preferably, it is proposed that a deformable or elastic part of the lever is supported on an inner wall part of the housing.

A simple and compact design is formed in that the locking piece is provided between the locking bolt and a locking cylinder or conversion roller that is perpendicular to the travel path of the locking bolt.

Activation of the locking piece is reliably prevented in that the lever is arranged in a groove surrounding the lever between the locking piece and the locking cylinder or conversion roller.

The plate-shaped lever not only greatly stabilizes the lever, but also
This further prevents the tool from being inserted in the direction of the locking piece.

The side surface of the lever can be parallel to a plane extending through the locking cylinder axis, the locking bolt axis, or the locking bolt movement axis,
The lever pivot can be at right angles to the lever side.

In actuation of the lever, a conversion roller provided coaxially with the cylinder core can have a radial projection between one end of the lever and the locking bolt.

This projection can be provided at a point on the converting roller which faces towards the lever when the locking bolt locks, so that the lever is reliably actuated by withdrawal of the locking cylinder.

When an axially movable cylinder core is used in a cylinder lock, the axial extension of the surface between the protrusion and the cylinder lock or the conversion roller portion with a large radial cross section corresponds to the movement path. I can do it.

Preferred embodiments of the invention are shown in the drawings and will be explained in detail below.

The steering lock has a housing 1 which is permanently mounted on the steering mechanism of a vehicle.

A locking bolt 2 is reversibly arranged in the housing 1 and acts in the direction of the steering wheel axis by means of a spring 3 supported in the housing 1.

At the end of the cylinder lock, the locking bolt 2 is provided with an ear 4 and a slot 5 extending along the longitudinal axis.

A cylinder lock 6 is provided in the housing 1, the locking cylinder 7 of the cylinder lock 6 being mounted in the housing 1 in a rotationally secure manner by means of a protruding wedge portion 8 and having a stop engaging in a groove 10 in the housing 1. 9, it is fixed so as not to move in the axial direction.

The core of the cylinder lock 6, which can be rotated by a key, is connected to a conversion roller 11.
The flat portion 12 of the ear portion 4 of the locking bolt 2 is in contact engagement with the locking bolt 2 .

The shaft 13 coaxial with the conversion roller 11 is connected to the slot 5 of the locking bolt 2.
The continuous passageway of the axial extension engages the rotating part of the ignition switch 15 to close the operating electrical circuit of the vehicle.

The locking device holds the locking bolt 2 in the unlocked position in a known manner in the locking preparation position until the key is partially or completely withdrawn from the cylinder lock connected directly or indirectly to the key of the cylinder lock. It forms part of the steering lock.

The housing 1 is provided with a groove 16 that communicates with the guide groove 17 of the locking bolt 2 and the receiving hole 18 of the conversion roller 11.

In a part of the groove 16 at the end of the steering shaft, a locking bolt-shaped cylindrical locking piece 19 is provided in the groove 16', so that the locking piece 19 is parallel to the cylinder core in the axial direction. It can be moved and actuated by the spring 20 in the direction of the locking bolt 2.

The locking bolt 2 has a blind hole-shaped slot 21 facing the locking piece 19 in the locking position.

A correspondingly dimensioned mounting hole 1' is provided with the locking piece 19 of the housing 1.
It corresponds coaxially with

A lever 22 that connects the locking piece 9 with the end of the locking cylinder 7
is provided in the groove 16, and the side surface of this lever 22 is parallel to a plane extending through the axis of the locking cylinder 7 and the axis of the locking bolt 2, and the pin 23 passes through the side surface at right angles. It is attached to the housing 1 about which the lever 22 can pivot.

At the end of the locking bolt 2, the lever 22 is connected to the locking piece 1.
It has a nose portion 24 that projects into the movement path of the locking piece 19 between the locking bolt 9 and the locking bolt 2, and is adapted to hold the locking piece 19 in the unlocked position.

When the steering lock is in the locking position (FIG. 1), the end 25 of the lever 22 projects into the axial movement path of the protrusion 26 of the converting roller 11, and the lever 22 moves together with the converting roller 11 into the locking cylinder. 7 is pulled out of the housing 1 (FIG. 3), the end 25 located between the projection 26 and the locking cylinder 7 is moved away from the locking bolt 2.

A lever 22 is used to hold the locking piece 19 in the inoperative position.
has a pin-shaped protrusion 27, that is, a cam, which is inclined toward the front surface of the side far from the locking bolt 2, and this protrusion 27
is supported against the surface 28 of the groove 16 facing the front surface.

The cross section and shape of the protrusion 27 are such that the protrusion 27 is deformed only when a required force is applied to the lever 22, and this deformation causes the lever 22 to pivot and release the locking piece 19. There is.

The force required to deform the cam or protrusion 27 integral with the lever can be determined by the selection of the elastic material of the lever and by the setting of the predetermined breaking point.

When installing the locking bolt suppressor, the spring 20 of the locking piece 19
is forced through the mounting hole 1' of the housing 1 into the groove 16' adjacent to the groove 16.

The lever 22 is inserted through the locking bolt installation hole and is pivotally mounted within the housing 1 by a pin 23.

The installed locking bolt 2 covers the mounting hole 1' of the housing 1 to prevent other members from acting on the locking piece 19.

This mounting hole 1' is closed by a plug 11.

In installing the cylinder lock 6, the rotatable cylinder core and the converting roller 11 are rotated clockwise by means of a key such that the projection 26 of the converting roller 11 is guided over the end 25 of the lever 22.

During this step, the locking bolt 2 is moved in the opposite direction in a known manner.

In a steering lock device in which the steering lock device is installed in the vehicle steering groove and the cylinder lock is later pushed in, the stop 9 of the locking cylinder 7 is pressed into the cylinder core position rotated clockwise by a key for safety. It is simply moved into position in a known manner.

According to this position, the conversion roller 11 is inserted into the steering lock and is itself rotated and axially attached to a rotatable cylinder core or lock cylinder part by clipping, bayonet fastening or similar means, as is well known. connected to.

The above-described embodiment for the installation of a steering lock allows the necessary disassembly of the cylinder lock when the associated key is actuated, without releasing an additional restraining device and rendering the steering lock unusable. It shows.

FIG. 2 shows that when the cylinder lock is moved in the axial direction from the locking position, the protrusion 26 of the converting roller 11 acts on the end 25 of the lever 22 and rotates the lever 22 to rotate the cam or protrusion 21. After the deformation, the nose 24 releases the locking piece 19, thus indicating that the locking piece 19 is forced into the slot 21 of the locking bolt 2 by the spring 20.

The housing 1 is engaged in the slot 21 of the locking bolt 2.
The locking piece 19, which has a portion inside, prevents the locking bolt 2 from moving in both directions.

This locked position can only be released by complete disassembly or removal of the locking device.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the automobile steering lock in the locked position after normal operation, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is the locking bolt and cylinder. FIG. 2 is a longitudinal sectional view similar to FIG. 1 showing a locking piece that blocks the lock; In the figure, 1: Housing, 2: Locking bolt, 6: Cylinder lock, 11: Conversion roller, 16: Groove, 19: Locking piece, 22
Nilever 23: Pin, 24: Nose part.

Claims (1)

[Claims] 1. A lever 22 is pivotally supported in a groove 16 of the housing 1 by a pin 23, and one end 25 engages with a protrusion 26 of the conversion roller 11 connected to the core of the cylinder lock 6. The locking piece 19 can be locked, and the locking piece is provided corresponding to the lever 22 and is pressed in the locking direction by a spring.
When the lever 22 is rotated, the locking piece is released, and the end of the lever 22 opposite to the locking cylinder T is a locking piece that can be engaged with the locking bolt 2. It forms a nose part 24 which supports the underside of the piece 19, and the lever 22 is held in a non-rotatable position by a deformable projection 27, which is connected to the lever 22 or to a bendable projection of the housing wall. The lever 22 is disposed between the locking piece 19 and the locking cylinder 7 or the converting roller 11 in the groove 16 surrounding the lever 22, and when the cylinder lock is improperly removed, the cylinder lock is removed. The protrusion 26 of the converting roller 11 connected to the core of the lock 6 engages one end of the lever 22 and rotates the lever so that the nose 24 of the lever is rotated.
comes off from the locking piece 19 and the locking piece 19 engages with the locking bolt 2, thereby locking the locking bolt in the locking position.The locking bolt of the cylinder lock is now locked. Device.